part_of part of part of only in taxon only_in_taxon in taxon egg cell extracellular matrix egg coat GO:0035805 cellular_component A specialized extracellular matrix that surrounds the plasma membrane of the ovum of animals. The egg coat provides structural support and can play an essential role in oogenesis, fertilization and early development. 2011-04-19T02:07:23Z Metazoa